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Low-Vision Devices What is low vision? Low vision is a condition that means your vision can't be helped with traditional eyeglasses, contact lenses, intraocular lens implants, or corrective surgery. But in some cases, people with low vision may get help with special visual

Understanding Risks of Medicines in Pregnancy When you are pregnant, always check with your healthcare provider or midwife before taking any prescription or over-the-counter medicines. This includes herbs and dietary supplements. All medicines affect the baby. How they affect the

The Digestive System: An Overview What is digestion? Food and drink must be changed into smaller molecules of nutrients to be absorbed into the blood and carried to cells throughout the body. Digestion is the process by which food and liquid are broken down into smaller parts

Recognizing Gynecologic Problems Gynecological symptoms that may need medical attention Vaginal bleeding and discharge are a normal part of your menstrual cycle before menopause. But, if you notice anything different or unusual, talk to your healthcare provider. Don't try to

Anatomy of the Endocrine System in Children These are parts of the endocrine system: Hypothalamus. This gland is in the brain. It secretes hormones that stimulate or suppress the release of hormones in the pituitary gland. It also controls water balance, sleep, temperature

Anemia and Chemotherapy Anemia is a potential side effect of chemotherapy (chemo). It's a condition that involves a decrease in the number of red blood cells (RBCs) in your body. These are the cells that carry oxygen to other cells all over your body. Chemotherapy can damage your

Allergens: Animals What is an animal allergen? Allergens found in animals are a common cause of allergic reactions. They are caused by the proteins found in an animal's: Skin (dander) Saliva Urine Household pets such as cats and dogs are the most common sources of animal

Overview of Neck Masses in Children What are neck masses? Neck lumps (masses) are common problems in babies and children. Some neck masses are present at birth (congenital). They result from abnormal formation that occurs in the early stages of an unborn baby's development. Many

Melanoma: Diagnosis If your healthcare provider thinks you might have melanoma, you will likely need certain exams and tests to be sure. Diagnosing melanoma starts with your healthcare provider asking you questions. They will ask you about your health history, your symptoms, risk

Calculating a Due Date A typical pregnancy lasts, on average, 280 days, or 40 weeks—starting with the first day of the last normal menstrual period as day 1. An estimated due date can be calculated by following steps 1 through 3: First, determine the first day of your last